Catalogues - inflatable-seated-butterfly-valves-series-485-486-487-488

Catalogue Inflatable Seated Butterfly Valves - Series 485, 486, 487, 488

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A B C

D E F

Design features for reliable performance

A. ACTUATOR MOUNTING FLANGE: Flange is designed for direct actuator mounting.

B. RETAINING RING: Retaining ring

simplifies bearing and industrial seal removal and ensures positive bearing retention.

C. INDUSTRIAL BEARINGS: Multiple bearings substantially reduce operating friction and torque requirements,

eliminating any metal-to-metal contact, thus preventing shaft galling and freezing.

D. SHAFT SEALS: O-ring shaft seals insure positive sealing under the most adverse conditions.

E. SHAFT: Corrosion resistant, high

strength steel shaft is easily replaceable.

F. SEAT O RING SEAL: O-ring

provides long lasting positive seal of seat inflation pressure.

G. MATERIAL SEAL: Land seal

prevents material contamination of

K L P

F G C

seat o-ring seal.

H. DISC/SHAFT: Integral disc and shaft with smooth, contoured surface provides minimum resistance to flow and reduces material buildup.

I. AIR INLET PORT: Oversized inlet port allows quick valve pressurization/ depressurization.

J. DISC: Smooth contoured surface assures extended seat life and disc is easily replaceable.

K. DISC SCREWS: Self-locking screws of high tensile steel provide strong link between disc and shaft, yet allow easy disassembly.

L. HOUSING: Rugged one-piece body fits standard 125/150 class ANSI flat-faced flanges and PN 10 metric flanges.

M. HOUSING GASKET: Die cut elastomeric gasket assures leakproof housing.

N. HOUSING BOLTS: High strength steel bolts

maintain structural integrity of housing under the most adverse conditions.

O. SPLIT HOUSING: Rugged two-piece body fits standard 125/150 class ANSI flat-faced flanges and PN 10 metric flanges. Minimizes assembly time and allows for integral shaft and disc.

P. RESILIENT SEAT: Easily replaceable, the

inflatable molded seat has a smooth contour locking design to minimize stress and hold the seat in place, eliminating any need for flange gaskets.